Self-propelled vehicle.



FABRIUIO DE ALBA B.

SELF PROPELLED VEHICLE. APPLICATION FILED SEPT. 6, 1912. RENEWED NOV. 7, 191a.

E QQQAHF Patented Dec. 23, 1913.

x a a I:Tai'

avwewto'c Fazriaio oZeAZZa B.

I To all whom it may concern Peron.

'rann'rcro or; ALBA s, or PANAMA, PANAMA.

SELF-PROPELLED VEHICLE.

Specification of Letters Patent. I t t 23,1913,

Application filed September 6, 1912, Serial No. 718,894. Renewea November 7, 1913. Serial No. 799,800.

Be it known that I, Fannroro on ALBA B. a citizen of the Republic of Panama,'residing at Panama, have invented certain new and useful Improvements in Self-Propelled Vehicles, of which the following is a specification, reference being had to the accompanying drawings.

This invention comprehends certain new and useful improvements in automobiles or other self-propelled vehicles; and the invention has for its primary object a simple and efiicient means whereby either one of the rear traveling. or ground wheels of the vehicle may be retarded or brought entirely to .a standstill, whereby it may serve as the pivot or'axis upon which the vehicle may be turned, and the invention consists in certain constructions, arrangements and combinations of the parts that I shall herein after fully describe and claim.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawing, in which, i I

Figure 1 is a plan view of the principal parts of my improved self-propelled vehicle with the mechanism in position to turn said vehicle, said view showing the front Wheels turned to proper position to guide the vehicle to the left.

Fig. 1, showing the parts of the mechanism in normal position and the spindles for the front wheels in alinement with the front axle. Corresponding and like parts are referred to in the following description and designated in the accompanying drawingby like reference characters.

Referring to the drawing, the numeral 1 designates the rear axle housing of an automobile or similar self-propelled vehicle, 2 the rear ground or traveling wheels, and 3 the front ground wheels which are mounted to turn to the right or to the left in the usual manner, to steer the Vehicle, the said parallel'toth'e plane 0' the'whee1, said arms.-

Fig. 2 is a view similar to being pivotally'. connected at their rear ends to a transversely extending link bar 7. The link bar 7 is connected, preferably near its ends, to corresponding arms of bell cranks 8 which are fulcrulnecl at their elbows, as indicated at 9, on the frame bar 5, the other arms of the respective bell cranks being pivotally connected to brake actuating rods 10 arranged in any suitable manner to operate the brakes 11 for the respective rear ground or traveling wheels 2.

From the foregoing description in connection with the accompanying drawing, the operation of my invention will be apparent.

The bell cranks 8 are arranged in oblique relation to each other, as clearly illustrated in the drawing, and hence, when the front wheels 3 are turned to the right or to the left, to steer the vehicle, it is obvious that one of the rods 10 will be pulled forwardly to set the brake on one of the 'wheels 2, while the other rod 10 will be moved rearwardly to release the brake on the other rear wheel. The wheel on which the brakes are set is the wheel constituting the center of the turning movement of the vehicle, and consequently, said wheel will be retarded or brought to a standstill whilethe other rear wheel will be permitted to accelerate its speed a corresponding amount, owing to the differential in the rear axle housing 1. It will thus be seen that I have provided very simple and etficient mechanism whereby the brake will be set on one rear wheel and not the other, according to the direction in which the vehicle is being steered. the simplicity of the devices employed rendering the invention easily applicable for self-propelled vehicles of widely varying types.

While the accompanying drawing illustrates what I believe to be the preferred embodiment of my invention, it is to be understood that the invention is not limited thereto, nor to any construction of brake mechan1sm by itself, and that various changes may be made in the construction, arrangement and proportions of the parts without depart ing from thescope of the invention, as, defined in the appended claim.

What I claim is The combination with a vehicle, embodying rear ground wheels having independent brakes and front steering wheels, a frame bar to which the front and steering wheels are connected, rearwardly projectln arms movable with said wheels .to the right and fie the left, a, link bar pivotally copnecte 1 0 said arms, bell cranks fulcrumed on the frzune bar and having their rear arms pivotally connected to film link bar and brake actuating rods pimtally connecteii t0 the other arm of the bell cranks and t0 the brakes, as and for the purpose set forth.

FABRICIQ DE ALBA Witnesses: i

NM. GALEY JOHNSTON MARIE PREOIADO',

Gonies of this $5512 ma he ab'zain'ed ion: five cents b a rldressinv the Gmnmissinner 0} Patents,

Washingtom, 3. 

